Premiere Elements 10 , movement of CTI with mouse wheel

In all previous versions of Premiere Elements ( 2,4 and 7) that I have used I have been able to move the Current Time Indicator one frame at a time by rolling the mouse wheel. I now find in version 10 I am unable to do this, the CTI jumps 6-7 frames per roll of the wheel. If I minimise the program and then maximise again the CTI moves one frame per roll until I perform any action and then it reverts back to 6-7 frames per roll. I have become accustomed to using the wheel to precisely position the CTI and would like to see this function restored please.